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2. Furnace (central heating) - Wikipedia

   en.wikipedia.org/wiki/Furnace_(central_heating)

   High efficiency condensing gas furnaces typically achieve between 90% and 98% AFUE. [3] A condensing gas furnace includes a sealed combustion area, combustion draft inducer and a secondary heat exchanger. The primary gain in efficiency for a condensing gas furnace, as compared to a mid-efficiency forced-air or forced-draft furnace, is the ...

3. Trane - Wikipedia

   en.wikipedia.org/wiki/Trane

   To cool the tunnel to 30 °C (86 °F), engineers installed 480 kilometres (300 mi) of 0.61 m (24 in) diameter cooling pipes carrying 84 million liters (18.5 million gallons) of water. The network—Europe's largest cooling system—was supplied by eight York Titan chillers running on R22, a Hydrochlorofluorocarbon (HCFC) refrigerant gas. [20] [21]

4. List of YouTube features - Wikipedia

   en.wikipedia.org/wiki/List_of_YouTube_features

   YouTube originally offered videos at only one quality level, displayed at a resolution of 320×240 pixels using the Sorenson Spark codec (a variant of H.263), [29] [30] with mono MP3 audio. [31] In June 2007, YouTube added an option to watch videos in 3GP format on mobile phones. [32]

5. AOL.com - News, Sports, Weather, Entertainment, Local & Lifestyle

   www.aol.com

   AOL latest headlines, entertainment, sports, articles for business, health and world news.

6. List of most-viewed YouTube channels - Wikipedia

   en.wikipedia.org/wiki/List_of_most-viewed...

   This is an accepted version of this page This is the latest accepted revision, reviewed on 11 January 2025. This is a dynamic list and may never be able to satisfy particular standards for completeness. You can help by adding missing items with reliable sources. Indian record label T-Series is the most-viewed YouTube channel, with over 276 billion views. The list of most-viewed YouTube ...

7. Sydney Sweeney Goes Pantsless for Rare Date Night with Fiancé

   www.aol.com/sydney-sweeney-goes-pantsless-rare...

   You can get TurboTax for 30% off on Amazon today. AOL. ... AOL reviewed: This smart humidifier helps me sleep better in the dry winter months. See all deals. In Other News. Finance. Finance.